##############################################################################
#
#  SMB Remote Code Execution Vulnerability (957095)
#
#  Copyright: SecPod
#
#  Date Written: 2008/10/15
#
#  Revision: 1.1
#
#  Log: schandan
#  Issue #0334
#  ------------------------------------------------------------------------
#  This program was written by SecPod and is licensed under the GNU GPL
#  license. Please refer to the below link for details,
#  http://www.gnu.org/licenses/gpl.html
#  This header contains information regarding licensing terms under the GPL,
#  and information regarding obtaining source code from the Author.
#  Consequently, pursuant to section 3(c) of the GPL, you must accompany the
#  information found in this header with any distribution you make of this
#  Program.
#  ------------------------------------------------------------------------
##############################################################################


if(description)
{
  script_id(900053);
  script_bugtraq_id(31647);
  script_cve_id("CVE-2008-4038");
  script_copyright("Copyright (C) 2008 SecPod");
  script_version("Revision: 1.0");
  script_tag(name:"cvss_base", value:"7.1");
  script_tag(name:"risk_factor", value:"High");
  script_category(ACT_GATHER_INFO);
  script_family("Windows : Microsoft Bulletins");
  script_name("SMB Remote Code Execution Vulnerability (957095)");
  script_summary("Check for Hotfix and version of SMB");
  desc = "
  MS08-063

  Overview: This host has critical security update missing according to
  Microsoft Bulletin MS08-063.

  Vulnerability Insight:
  The issue is caused due to an input validation error in the handling of
  file names in the Microsoft SMB (Server Message Block) protocol.

  Impact: Successful exploitation could allow remote attackers to cause
  a buffer underflow.

  Impact Level: System/Network

  Affected Software/OS:
  Microsoft Windows 2K Service Pack 4 and prior.
  Microsoft Windows XP Service Pack 3 and prior.
  Microsoft Windows 2003 Service Pack 2 and prior.

  Fix: Run Windows Update and update the listed hotfixes or download and
  update mentioned hotfixes in the advisory from the below link,
  http://www.microsoft.com/technet/security/bulletin/ms08-063.mspx

  References:
  http://www.microsoft.com/technet/security/bulletin/ms08-063.mspx
  http://www.microsoft.com/technet/security/bulletin/ms09-001.mspx

  CVSS Score:
    CVSS Base Score     : 7.1 (AV:N/AC:M/Au:NR/C:N/I:N/A:C)
    CVSS Temporal Score : 5.3
  Risk factor : High";

  script_description(desc);
  script_dependencies("secpod_reg_enum.nasl");
  script_require_ports(139, 445);
  exit(0);
}


include("smb_nt.inc");
include("secpod_reg.inc");
include("secpod_smb_func.inc");

if(hotfix_check_sp(win2k:5, xp:4, win2003:3) <= 0){
  exit(0);
}

# Check Hotfix Missing 958687 (MS09-001)
if(hotfix_missing(name:"958687") == 0){
  exit(0);
}

# Check Hotfix Missing 957095 (MS08-063)
if(hotfix_missing(name:"957095") == 0){
  exit(0);
}

sysPath = registry_get_sz(key:"SOFTWARE\Microsoft\COM3\Setup",
                          item:"Install Path");
if(!sysPath){
  exit(0);
}

share = ereg_replace(pattern:"([A-Z]):.*", replace:"\1$", string:sysPath);
file =  ereg_replace(pattern:"[A-Z]:(.*)", replace:"\1",
                     string:sysPath + "\drivers\Srv.sys");

sysVer = GetVer(file:file, share:share);
if(!sysVer){
  exit(0);
}

# Windows 2K
if(hotfix_check_sp(win2k:5) > 0)
{
  # Grep for Srv.sys version < 5.0.2195.7177
  if(egrep(pattern:"^5\.0\.2195\.([0-6]?[0-9]?[0-9]?[0-9]|7(0[0-9][0-9]|" +
                   "1[0-6][0-9]|17[0-6]))$", string:sysVer)){
    security_hole(0);
  }
  exit(0);
}

# Windows XP
if(hotfix_check_sp(xp:4) > 0)
{
  SP = get_kb_item("SMB/WinXP/ServicePack");
  if("Service Pack 2" >< SP)
  {
    # Grep for Srv.sys < 5.1.2600.3436
    if(egrep(pattern:"^5\.1\.2600\.([0-2]?[0-9]?[0-9]?[0-9]|3([0-3][0-9][0-9]|" +
                     "4([0-2][0-9]|3[0-5])))$", string:sysVer)){
       security_hole(0);
    }
    exit(0);
  }
  else if("Service Pack 3" >< SP)
  {
    # Grep for Srv.sys < 5.1.2600.5671
    if(egrep(pattern:"^5\.1\.2600\.([0-4]?[0-9]?[0-9]?[0-9]|5([0-5][0-9][0-9]|" +
                     "6([0-6][0-9]|70)))$", string:sysVer)){
       security_hole(0);
    }
    exit(0);
  }
  security_hole(0);
}

# Windows 2003
if(hotfix_check_sp(win2003:3) > 0)
{
  SP = get_kb_item("SMB/Win2003/ServicePack");
  if("Service Pack 1" >< SP)
  {
    # Grep for Srv.sys version < 5.2.3790.3200
    if(egrep(pattern:"^5\.2\.3790\.([0-2]?[0-9]?[0-9]?[0-9]|3[01][0-9][0-9])$",
             string:sysVer)){
       security_hole(0);
    }
    exit(0);
  }
  else if("Service Pack 2" >< SP)
  {
    # Grep for Srv.sys version < 5.2.3790.4363
    if(egrep(pattern:"^5\.2\.3790\.([0-3]?[0-9]?[0-9]?[0-9]|4([0-2][0-9][0-9]|" +
                     "3([0-5][0-9]|6[0-2])))$", string:sysVer)){
       security_hole(0);
    }
    exit(0);
  }
  security_hole(0);
}
